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| author | Ganesh Ajjanagadde <gajjanagadde@gmail.com> | 2015-11-25 16:59:07 -0500 |
|---|---|---|
| committer | Ganesh Ajjanagadde <gajjanagadde@gmail.com> | 2015-12-01 19:05:19 -0500 |
| commit | 2f5075f5513fdec21ddba802af0f2433fcfd430e (patch) | |
| tree | e7851f6ef3e2ee88cd828208ea342240118e95f2 /doc/platform.texi | |
| parent | 1d0c94ddaef8225c75f72d5d8c54c34270f88d80 (diff) | |
| download | ffmpeg-2f5075f5513fdec21ddba802af0f2433fcfd430e.tar.gz | |
avcodec/cbrt_tablegen: speed up dynamic table creation
On systems having cbrt, there is no reason to use the slow pow function.
Sample benchmark (x86-64, Haswell, GNU/Linux):
new:
5124920 decicycles in cbrt_tableinit, 1 runs, 0 skips
old:
12321680 decicycles in cbrt_tableinit, 1 runs, 0 skips
Reviewed-by: Ronald S. Bultje <rsbultje@gmail.com>
Signed-off-by: Ganesh Ajjanagadde <gajjanagadde@gmail.com>
Diffstat (limited to 'doc/platform.texi')
0 files changed, 0 insertions, 0 deletions